How to Pass a Dictionary as Keyword Parameters to a Function in Python?

Passing a Dictionary to a Function Using Keyword Parameters

In Python, it is often desirable to pass a dictionary to a function as keyword parameters. This allows the function to receive the parameters in a named and structured manner.

To pass a dictionary to a function as keyword parameters, you must use the ** (double asterisk) operator when calling the function. This unpacks the dictionary and passes each key-value pair as an individual argument.

For example, let's say you have a dictionary named d and a function named f that takes a single parameter p. To pass d as a keyword parameter to f, you would write the following code:

d = {"p": 1}

def f(p):
    print(p)

f(**d)

This will print the value of the p key in the dictionary, which is 1.

You can also pass multiple dictionaries as keyword parameters to a function. For example, the following code passes two dictionaries, d1 and d2, as keyword parameters to the function g:

d1 = {"p1": 1}
d2 = {"p2": 2}

def g(p1, p2):
    print(p1, p2)

g(**d1, **d2)

This will print the value of p1 from d1 and the value of p2 from d2, which are 1 and 2 respectively.

Using keyword parameters can help to make your code more readable and maintainable. It also allows you to pass a large number of parameters to a function in a concise and structured manner.

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